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A021199 Decimal expansion of 1/195. 0
0, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Without the initial zeros, decimal expansion of 20/39. Period is of length 6: 5, 1, 2, 8, 2, 0. - Alonso del Arte, May 26 2018

LINKS

Table of n, a(n) for n=0..98.

FORMULA

a(n) = (1/30)*(36*(n mod 6) - 24*((n+1) mod 6) + ((n+2) mod 6) + 26*((n+3) mod 6) - 19*((n+4) mod 6) + 16*((n+5) mod 6)) - 2*(C(2*n, n) mod 2), with n >= 0. - Paolo P. Lava, Sep 24 2009

EXAMPLE

0.0051282051282051282051282051282051282...

MATHEMATICA

Join[{0, 0}, RealDigits[1/195, 10, 104][[1]]] (* Alonso del Arte, May 13 2018 *)

CROSSREFS

Cf. A021069 (1/65).

Sequence in context: A195407 A011509 A144738 * A073324 A021665 A226613

Adjacent sequences:  A021196 A021197 A021198 * A021200 A021201 A021202

KEYWORD

nonn,cons,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified September 19 16:24 EDT 2021. Contains 347564 sequences. (Running on oeis4.)